The site doesn't use image names or metadata to find matches. Rather, it uses image identification technology for more accuracy.
Of course, you don't need to be a photographer to use TinEye. Use it to find a higher resolution copy of an image. Or, see how others have modified images. Check its Cool Searches page for fun ideas.
TinEye has more than one billion images indexed. It adds more each week. Still, it won't catch every image online.
TinEye
From Kim Komando site..